Title :
A discrete model for radiowave scattering in vegetation screens at millimetric wave frequencies
Author :
Fernandes, Telmo R. ; Caldeirinha, Rafael F S ; Richter, Jürgen ; Al-Nuaimi, Miqdad O.
Author_Institution :
Polytech. Inst. of Leiria, ESTG, Portugal
Abstract :
A method based on the radiative energy transfer theory (RET) to estimate the scattered signals from isolated groups of trees is presented. The proposed method consists of measuring the reradiation function of each tree in the group and subsequently uses these in a discrete algorithm to estimate the overall reradiation at any location within a forest scenario. The estimated scattering is compared with measurements performed inside an anechoic chamber on two tree species at 20 and 62.4 GHz.
Keywords :
anechoic chambers (electromagnetic); electromagnetic wave scattering; millimetre wave propagation; 20 GHz; anechoic chamber; discrete algorithm; foliage penetration; millimetric wave frequency; radiative energy transfer theory; radiowave scattering; reradiation function; scattered signal estimation; tree group; vegetation screen; Anechoic chambers; Electromagnetic scattering; Energy exchange; Estimation theory; Extraterrestrial measurements; Frequency; Radio communication; Radiowave propagation; Scattering parameters; Vegetation;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on
Print_ISBN :
0-7803-8523-3
DOI :
10.1109/PIMRC.2004.1368318
